Texas Instruments TPS650231EVM, TPS65023B manual Input/Output Connector Description

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Input/Output Connector Description

3Input/Output Connector Description

This section describes the jumpers and connectors on the EVM, as well as how to properly connect, set up, and use the TPS65023B/TPS650231EVM-664.

J1 – VIN

Input voltage from external power supply, recommended maximum 5.5 V. Input current depends on load but typically is less than 2 A.

J2 – GND

This is the return connection for VIN.

J3 – VINLDO/GND

Input voltage and return for LDO1 and LDO2. Resistor R20 connects this pin to VIN. If an external power supply is used, remove R20. Recommended maximum input voltage is 5.5 V.

J4 – VSYSIN/GND

Input voltage and return for VSYSIN, one of the input voltages for RTC. Resistor R21 can be used to connect this input to VIN. If an external power supply is used, remove R21. Recommended maximum input voltage is 4 V.

J5 – VBACKUP/GND

Input voltage and return for VBACKUP, one of the input voltages for RTC. There are no onboard connections to a voltage input. Recommended maximum input voltage is 4 V.

J6 – VRTC/GND

Output voltage from RTC circuit.

J7 – Fault Outputs

Four fault outputs are available on this connector:

PWRFAIL – Fault occurs when input voltage is less than 3 V. Pulled up to VRTC when safe; low for fail.

INT – Fault occurs when a fail is on an input or output voltage; acts as a sum fail. Pulled up to VIN when safe; low for fail.

RESPWRON – Low reset signal is controlled by SW1, 144 ms. Pulled up to VIN normally.

LOWBAT – Fault occurs when input voltage is less than 3.6 V. Pulled up to VIN when safe; low for fail.

J8 – I2C

This header duplicates the I2C signals from the J20 interface connector. I2C data (SDA) and clock (SCL) can be accessed on this header

J9 – VDCDC1

Output from DCDC1 switching regulator maximum output current 1.7 A; default voltage setting is

3.3V.

J10 – GND

Return for VDCDC1.

J11 – VDCDC2

Output from DCDC2 switching regulator; maximum output current 1.2 A.

J12 – GND

Return for VDCDC2

J13 – VLDO1

Output from low-dropout regulator VLDO1; maximum output current 200 mA.

J14 – GND

Return for VLDO1

J15 – VLDO2

Output from low-dropout regulator VLDO2; maximum output current 200 mA.

J16 – GND

Return for VLDO2.

SLVU394 –October 2010

TPS65023B/TPS650231EVM

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Copyright © 2010, Texas Instruments Incorporated

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Contents Introduction RequirementsPersonal Computer Electrical Performance Specification FeaturesInput/Output Connector Description Setup Simple Two-Point Voltage Scaling, TPS650231 Setting the Output VoltageSetting the Output Voltage for DCDC2, TPS650231 ModificationsLayout Board LayoutTop Layer Routing Layer-2 Routing, GND Plane Layer-3 Routing, Vin Plane Bottom Layer Routing Schematic Schematic and Bill of MaterialsBill of Materials Related DocumentationTPS65023B/TPS650231EVM-664 Bill of Materials Evaluation Board/Kit Important Notice FCC WarningEVM Warnings and Restrictions Products Applications Important Notice

TPS65023B, TPS650231EVM specifications

Texas Instruments has a reputation for producing high-quality power management solutions, and the TPS650231EVM and TPS65023B are perfect examples of this. These advanced power management modules are designed for efficient power delivery in various applications, including portable devices and embedded systems.

The TPS650231EVM is an evaluation module developed to facilitate the evaluation of the TPS65023B power management IC. This device is specifically engineered to deliver power to processors that require multiple outputs from a single power source. The TPS65023B integrates several key features that make it a robust choice for designers aiming to simplify their power management requirements.

One of the main highlights of the TPS65023B is its dual buck converter. This converter can efficiently convert the input voltage into multiple output voltages, specifically optimized for powering processors and other system components. The device supports adjustable output voltages, allowing developers to tune the system to meet the exact power needs of their applications. With an input voltage range of 2.5V to 5.5V, the TPS65023B can accommodate diverse power input requirements.

Another key technology incorporated in the TPS65023B is the ultra-low quiescent current specification, which helps extend battery life in portable applications. This is particularly important in battery-powered devices, where optimization of power consumption is critical. The device also incorporates various protection features, including thermal shutdown, over-voltage protection, and short-circuit protection, ensuring reliable operation under various conditions.

The TPS65023B features a small footprint, making it ideal for space-constrained designs. The integration of multiple power management functions into a single device not only saves board space but also simplifies the design process, allowing engineers to focus on other critical aspects of their applications.

In addition to its technical specifications, the TPS650231EVM provides a user-friendly platform for evaluating the performance of the TPS65023B. This evaluation module includes necessary components and design considerations, enabling developers to quickly assess the device's capabilities within their systems.

In summary, the Texas Instruments TPS650231EVM and TPS65023B offer cutting-edge features, advanced technology, and robust performance. Their versatility and efficiency make them highly suitable for a range of applications, helping engineers achieve their design goals while maximizing power efficiency and reliability.